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4. Directive 2001/20/EC on the approximation of the laws, regulations and administrative provisions of the Member States relating to the implementation of good clinical practice in the conduct of clinical trials on medicinal products for human use.;Official J Eur Commun,2001
5. Standardization of allergen extracts for immunotherapy: Where do we stand?;Becker;Curr Opinion Allergy Clin Immunol,2006